29
O
WNER
’
S
F
LIGHT
M
ANUAL
28
XL
Step 4 - Weights for Calculating Pilot/Co-pilot ARM for
your Velocity:
Have a friend handy that you have pre-weighed on one of the
certified scales (obviously if you only have three certified scales,
do this prior to step 3). Record his weight below. Have him sit in
the pilot’s seat. Now record the aircraft weight from each scale,
then the combined total.
Pilot Weight (friend’s exact weight) =
Nose Wheel Weight (with Pilot) =
Left Main Wheel Weight (with Pilot) =
Right Main Wheel Weight (with Pilot) =
Combined Total Weight (with Pilot) =
This information will be needed to calculate the pilot ARM for
your Velocity.
Step 5 - Weights for Calculating Rear passenger ARM for
your Velocity:
Have the same friend sit in the rear passenger’s seat. Now
record the aircraft weight from each scale, then the combined
total.
Pilot Weight (friend’s exact weight) =
Nose Wheel Weight (with Rear Passenger) =
Left Main Wheel Weight (with Rear Passenger) =
Right Main Wheel Weight (with Rear Passenger) =
Combined Total Weight (with Rear Passenger) =
This information is needed to calculate the Rear Passenger ARM
for your Velocity.
Step 6 - Weights for Calculating Fuel ARM for your
Velocity:
Step 2 - Lofting measurements needed for static CG:
Once the aircraft is level, get out the plumb bob, some 2”
masking tape, and a sharp point marker pen. The tape goes on the
floor to receive the mark from the plumb bob, as well as the iden-
tification marks. Record measurements for all those indicated by
blank spaces on diagram OM-CL. Enter your measurements in
the blanks next to the measurements for the factory aircraft
N97XL. Some dimensions may vary slightly, and will have to be
taken into consideration when calculating the CG box for you
Velocity.
There are three critical dimensions for calculating your static
CG, shown in diagram OM-CL (looking down on the aircraft).
They are:
• Nose “datum of aircraft”
• Nosewheel axle (when trailing)
• Main gear axles (average if different)
Step 3 - Weighing your Velocity:
The aircraft should be ready to fly, with oil, but NO FUEL. All
accessories should be installed prior to w&b.
NOTE: If your Velocity is in primer stage (ie. no finish coat yet),
then you will need to repeat the w&b procedure after final paint
coat is on. We have found that the final coat adds about 16 lbs
and generally shifts the CG aft slightly.
To weigh the aircraft, level it while on the three scales (light
duty scale goes under the nose wheel, with the other two under
the main wheels) fore and aft, right and left. NOTE: It is critical
that you level the aircraft prior to w&b!
Record each individual scale reading, then record the com-
bined total. Record each weight below:
Left Main Wheel Weight =
Right Main Wheel Weight =
Nose Wheel Weight =
Combined Total Weight =
Summary of Contents for XL RG
Page 1: ......
